CVE-2021-21066 Adobe Bridge Font Parsing Out-Of-Bounds Write Arbitrary Code Execution Vulnerability

High 7.8 Published 25 Feb 2021 Updated 16 Sep 2024

An attacker can execute arbitrary code by tricking a user into opening a malicious TTF file in Adobe Bridge.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-21066?

CVE-2021-21066 is a high-severity memory corruption vulnerability in Adobe Bridge, published on 25 Feb 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Adobe Bridge version 11.0 (and earlier) is affected by an out-of-bounds write vulnerability when parsing TTF files that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Weakness: CWE-787

Which versions are affected by CVE-2021-21066?

It affects 1 product.

Products include Adobe Bridge.

How do I fix CVE-2021-21066?

No fix has been published for CVE-2021-21066 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-21066 being exploited?

There is no known exploitation of CVE-2021-21066 in the wild and no public exploit code.

All Adobe Bridge vulnerabilities

Sources

Also known as GHSA-w7vp-fx35-p349.